Perpetual calendar



Sept. 29, 1,555,452

P. VAN MOE.

PERPETUAL CALENDAR Filed D c. 24, 1924 2 Sheets-Sheet 1 men/m .ZZwZ I /y0 I Sept. 29, 1925.

- 1,555,492 P. VAN MOE PERPETUAL CALENDAR Fiied Dec. 24, 1924 2 Sheets-Sheet 2 mvtm/r 2w] My Na Arm/Mr Patented Sept. 29, .1925.

UNITED STATES PATENT OFFICE.

PAUL VANMOE OF ROUEN, FRANCE.

PERPETUAL CALENDAR.

Application filed December 24, 1924; Serial No. 757,833.

clearly understood I have illustrated, as an example, an embodiment thereof in and by drawings appended hereto and wherein:

Figure 1 is a front view showing the essential parts of my calendar, as stripped of any mounting made of cardboard, wood, metal or other suitable material, as well as from any adornment.

Figure 2 is a cross sectional view thereof showing the sliding week-day pointer.

Figure 3 represents a front view and a vertical sectional view of the index-slip which constitutes an extra and optional date-pointer. The disposition of this slip is illustrated by Figure 1.

Figure 4 represents a combination of the above referred to perpetual calendar with a pad or block of sheets of paper of known pattern.

Figure 5 is a vertical sectional view along line A-B of Figure l,

Figure 6 is a part sectional view, on an enlarged scale, showing the position of the parts of perpetual calendar with relation to the pad.

In all the figures the same reference numerals denote the same parts.

As will be apparent, the perpetual calendar which is the object of my invention is constituted by a single plate or table 1 (Figure 1) whereon are inscribed all the month-dates.

At the upper part of the said table is located in an appropriate manner an end wise slidable pointer 2 to indicate the days of the week, bearing thirteen inscriptions: Monday, Tuesday, WVednesday, Thursday, Friday, Saturday, Sunday, Monday, Tuesday, WVednesday, Thursday, Friday, Saturday. In order to reduce the length of the pointer, I can also show on table 1 (Figure 1), in the two upper left-hand and right-hand end cases, the inscriptions Monday and Saturday. The pointer itself will then have only eleven inscriptions (Figure 1). The divisions on this pointer agree with those on the date table.

Said pointer being adapted to slide from left to right and from right to left in front of the date table, I am always able to make the first day in a month to occur with the day on which the month begins. The pointer may then be rendered stationary in some suitable manner, the calendar being" adjusted for the whole month. In the con-. struction illustrated, the pointer consists of a. strip of material which is folded longitudinally upon itself and fitted over the upper edge of the plate or table so as to straddle the same. In case the material of which the strip is constructed is resilient (which is preferred), the folded strip will thus exert a friction grip upon the table which will serve to retain it in" adjusted position; but if non-resilient material be used, then some additional clamping means will be provided.

At the upper part of each date case in table 1 (Figure 1), a hole 3 or any other device may be provided so as to permit the attachment of a coloured pointer, or index, for instance an articulated ring, as shown at 4:. This index ring, while optional, serves to frame the date, thereby showing the days exact date. In order to change the date, I have only to put the index on another date in the same manner as one shifts a plug on a telephone board. V

The four vacant cases at the right hand bottomport-ion of table 1 (Figure 1) are adapted to take the month and year indications.

In order to make my method more clearly understood I will give the following examples:

The month of May in the year 1924 be ginning on a Thursday, I slide pointer 2 Figure 1) so that the word Thursday or tie letter T will come opposite the date number 1 as shown (Fig. 1); pointer 2 engaging the plate or table 1 with considerable friction will retain its adjusted position by means of its grip. This mere shifting of the pointer will adjust the calen dar for the whole month of May 1924. P0- sitioning the index slip 4: will show the days date at a glance.

Being so adjusted, my calendar will show that May the 31st falls on a Saturday. As regards, therefore, the next month, the user knows, instantly that letter S (Sunday) should 'be positioned; opposite June 1st; but if he should forgetiuntil, say, the 5th or the 10th day of June. to shift the pointer, the present position of the parts Will alvy ay slin dicate the adjustment whiohsho'iild beinade.

Utilizations of my novel perpetual calendar are numerous.

For instance, as shown by Figures 4, 5 and 6, the pad or block of sheets mounting Which is the subject matter of French Pat ent No. 531,963 dated; the 6th day of Novem ber, 1920, can be fitted 'With this calendar. Suitably marked,'the clamping plate 1 of the said pad constitutes the table,"and the slide or 'poi'nter'2, straddling and riding "on the upper part 'of the plate shows the monthdates,'the' said slide being assumed in this ins'tanceto'be made of non-resilient material, though it may, of course,'be resilient; in either case fi xedf adjustment of the table and of the pointer is obtained simultaneously by tightening the clamping nuts 5 on the threaded'bolts '6 carried by the back member 7 of the pad. f

My calendar may'thusbe used asa Wall calendar or it maybe provided With a back panel or member of eardboard or Wood, the pointer being in sueha case, constituted by,

for instance, aprintedcard-boa'rd orsuch' like strip sliding under resilient guides or h er Ho'vvever used the above described calendar is not cumbersome, is simple to operate nd; a y, o i a'dmb dy g a in l ble'enlyfit permits all the dates in the pres} ent month to be found ata' glance 'While Pbiiltihg tthe' veek pd 'er d a ng 11 w, part 'qi arl st amed. nd

deseribedj the nature of my said invention as 'vveltas the manner in which the same is to be claim is:

' '1, A perpetual calendar, comprising a flat performed, I 'declare that What I plate Whereon the days of the month are indicated in the form of, a table having Week divisions; and a horizontal indicator strip of sheet material folded longitudinally upon itself and fitted over the upper edge of said plate soasto straddle said edge and slide. endvvise on the same in either direction, and bearing indicia on the face of its front. member representing the days of the Week for cooperation With the week divisions of the table; said indicator strip adapted to be held in adjusted position, on said plate edge. i

2. A perpetualcalendar, comprisinga flat plate Whereon the days of the month are indicated in the form of a table having Week divisions; and a horizontal indioator strip of'sheet material folded longitudinally upon itself and fitted over the upper edge of said plate so as to straddle said edge and slide endWise on the same in either direction and bearing indicia on the face of'its front'vmember representing the days of the Week for cooperation with the week divisions of, the table; one member of the indicator strip being caused to press against said plate so as to'hold the strip in adjusted position.

8. A perpetual calendar, comprising a flat plate Whereon the days of the month are indicated in the form of a table having Week divisions; and a horizontal indicator strip of-resilient sheet material folded longitudinally upon itself and fitted over the up per edge of said plate so as to straddle and; said' strip frictionally grip the same; being movable endWise in either direc tion along said plate edge and being held in adjusted position 'by its fric tion grip thereon, the front member of; the

strip bearing indicia on its face representing the days of the Week for coaction with the Week-divisions of the table.

' In testimonyiwhereof I aflix my signature. PAUL VAN 

